I had a cold sore that went away but I still have an area on my top lip that is numb and scabbed. The scab will soften if I put an ointment on it and will come off. Under the scab is raw and burns. I have had this for 2 months now. Just when it feels like it may finally heal- it doesn t. I have tried Neosporin, Lotrimen, Oregano oil, Tea tree oil, carmex, hydrogen peroxide, lysine, and have been taking my prescription cold sore medicine just in case- any ideas?